ASF3 samv71-xplained usb enumeration fails sometimes

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I'm using asf3 with sam7x and using the usb vendor client example as base to usb communication.

I'm using linux, sometimes it works, sometimes dmesg gives:


usb 7-2: device not accepting address 59, error -71

unable to enumerate USB device


I think the problem is in how udc uses udd or in udd?

Any simple fix to this or better ideas where the problem is?
For alternatives I know I could switch to mplab harmony 3 or there is tinyusb library (sam support based on asf4?) but I would rather get this current code robust.


Last Edited: Thu. May 26, 2022 - 05:58 PM